---
title: pg_conversion 
---

The `pg_conversion` system catalog table describes the available encoding conversion procedures as defined by `CREATE CONVERSION`.

|column|type|references|description|
|------|----|----------|-----------|
|`conname`|name| |Conversion name \(unique within a namespace\).|
|`connamespace`|oid|pg\_namespace.oid|The OID of the namespace \(schema\) that contains this conversion.|
|`conowner`|oid|pg\_authid.oid|Owner of the conversion.|
|`conforencoding`|int4| |Source encoding ID.|
|`contoencoding`|int4| |Destination encoding ID.|
|`conproc`|regproc|pg\_proc.oid|Conversion procedure.|
|`condefault`|boolean| |True if this is the default conversion.|

**Parent topic:** [System Catalogs Definitions](../system_catalogs/catalog_ref-html.html)

